Extreme Networks Summit X150 Series Hardware Installation Manual page 114

Summit Power Supplies
The Summit X460 750 W AC power supply has the status LEDs listed in
Table 39: Summit X460 750 W AC Power Supply LED Meanings
Label and
Color State
AC OK Off
Green
On
DC OK Off
Green
Blinking
On
ALM Off
Red
Blinking
On
114
Meaning
No AC input
AC input is good.
Both DC outputs (55 V and 12 V) are bad or not enabled.
One output is enabled and good; the second output is bad or not enabled.
Both the 55 V and 12 V outputs are enabled and good.
No fault condition exists.
Power supply alert: power supply is likely to fail because of a developing fault,
such as abnormal thermal conditions or poor fan performance.
or
One output (55 V or 12 V) is bad.
Both outputs (55 V and 12 V) are bad.
Power supply is receiving 3.3 VSB from the system. (AC OK and DC OK are
off.)
Thermal shutdown, fan failure, or any fault condition when both 55 V and 12 V
are turned OFF.
Table 39.
Summit Family Switches Hardware Installation Guide